From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 42755] KVM is being extremely slow on AMD Athlon64 4000+ Dual
 Core 2.1GHz Brisbane
Date: Sun, 12 Feb 2012 10:41:32 GMT
Message-ID: <201202121041.q1CAfW1O022876@bugzilla.kernel.org>
References: <bug-42755-28872@https.bugzilla.kernel.org/>
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https://bugzilla.kernel.org/show_bug.cgi?id=42755





--- Comment #15 from Rosen <sandikata@yandex.ru>  2012-02-12 10:41:31 ---
(In reply to comment #14)
> (In reply to comment #13)
> > (In reply to comment #12)
> > > Allready mounted. Bu this directory doesn't exist, i have those dirs:
> > > 
> > > /sys/kernel/debug 
> > > acpi  bdi  dri  hid  ieee80211  kvm  mce  suspend_stats  usb  virtio-ports 
> > > wakeup_sources  x86
> > 
> > Is this ancient kernel? Or have you disabled tracing during kernel compile? If
> > later you will have to rebuild the kernel with tracing enabled. This is the
> > only way to see what is happening.
> 
> Its my kernel not default ARCH kernel.
> 
> zgrep TRACE /proc/config.gz 
> CONFIG_STACKTRACE_SUPPORT=y
> # CONFIG_RCU_TRACE is not set
> # CONFIG_TREE_RCU_TRACE is not set
> CONFIG_HAVE_ARCH_TRACEHOOK=y
> # CONFIG_TRACE_SINK is not set
> CONFIG_TRACE_IRQFLAGS_SUPPORT=y
> CONFIG_USER_STACKTRACE_SUPPORT=y
> CONFIG_HAVE_FUNCTION_TRACER=y
> CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
> CONFIG_HAVE_FUNCTION_TRACE_MCOUNT_TEST=y
> CONFIG_HAVE_DYNAMIC_FTRACE=y
> CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
> CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
> # CONFIG_FTRACE is not set
> CONFIG_HAVE_MMIOTRACE_SUPPORT=y
> 

zgrep TRACING /proc/config.gz
CONFIG_TRACING_SUPPORT=y


> i'm not sure which option need to be enabled?!

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